I think you should chill a little. Firstly, you're yelling at strangers, and you know what, if you're not willing to do that outside Sainsbury's, don't do it on the internet, because people will think you're a nutter. It's also somewhat rude.
Absolutely one is saying that children should be force-fed pulverized broccoli through a tube. That is in your mind. Conflating having an argument with your kids about what they eat with torture is a bit strong.
Besides, I only fucking wanted an excuse to write Olivia won't eat olives because it tickled me. I don't have kids so I don't have to worry about what they eat, and I get to spectate on friends managing their own – of whom an extraordinary proportion seem to be called Olivia. I'm sure there's a constantly shifting middle ground between persuasion, negotiation and coercion with any aspect of parenting and I'm sure I'd probably fuck it up, but hey, no kids. It's a bit of a middle-class problem though, if you grow up poor, you get to eat what you're fed or be hungry. I think we should sometimes reflect on that and the privilege we have.